EP 2026468 A3 20090812 - High precision analog to digital converter
Title (en)
High precision analog to digital converter
Title (de)
Hochpräzisions-Analog-zu-Digitalwandler
Title (fr)
Convertisseur analogique-numérique de haute précision
Publication
Application
Priority
- EP 03721907 A 20030430
- US 14250302 A 20020510
Abstract (en)
[origin: EP2026468A2] An analog to digital converter (ADC) includes a cross switch array coupled between an input switch array and an integrator configured to alternately transfer charges from a first input capacitor and a second input capacitor to a first integration capacitor and a second integration capacitor thereby improving linearity problems caused by capacitor mismatching. The cross switch array may also be configured to transfer charges from the first input capacitor to the first integration capacitor and from the second input capacitor to the second integration capacitor during a first charge transfer time interval, and from the first input capacitor to the second integration capacitor and from the second input capacitor to the first integration capacitor during a second charge transfer time interval. A sensing system including and ADC consistent with the invention is also provided. Various methods of transferring charges in an ADC are also provided.
IPC 8 full level
CPC (source: EP US)
H03M 3/34 (2013.01 - EP US); H03M 3/43 (2013.01 - EP US); H03M 3/456 (2013.01 - EP US)
Citation (search report)
[X] US 5323158 A 19940621 - FERGUSON JR PAUL F [US]
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR
DOCDB simple family (publication)
EP 2026468 A2 20090218; EP 2026468 A3 20090812; EP 2026468 B1 20111012; AT E411646 T1 20081015; AT E528859 T1 20111015; AU 2003225193 A1 20031111; CN 100471068 C 20090318; CN 1653695 A 20050810; DE 60324135 D1 20081127; EP 1504532 A1 20050209; EP 1504532 A4 20050720; EP 1504532 B1 20081015; TW 200409472 A 20040601; TW I246826 B 20060101; US 2003210166 A1 20031113; US 2004201511 A1 20041014; US 2005219105 A1 20051006; US 6744394 B2 20040601; US 7161520 B2 20070109; US 7196652 B2 20070327; WO 03096541 A1 20031120
DOCDB simple family (application)
EP 08166543 A 20030430; AT 03721907 T 20030430; AT 08166543 T 20030430; AU 2003225193 A 20030430; CN 03810567 A 20030430; DE 60324135 T 20030430; EP 03721907 A 20030430; TW 92112737 A 20030509; US 0313166 W 20030430; US 14112405 A 20050531; US 14250302 A 20020510; US 83856304 A 20040504